Loom



J. KEYS Oct. 10, 1933.

Loon

Filed Feb. 2. 1932 2 Sheets-Sheet 1 INVENTOR 1 6 BY F7 Z Oct. 10, 1933.J. KEYS ,9 40

Filed Feb. 2, 1932 2 Sheets-Sheet; 2.

INVENTOR MAJ -1 ATTORNEYS Patented Oct. 10, 1933 PATENT OFFICE LOOMJeremiah Keys, Philadelphia, Pa., assignor to Alva. Carpet & RugCompany, a corporation of Pennsylvania Application February 2, 1932.Serial No. 590,359

8 Claims.

This invention relates to looms of the type particularly adapted forcarrying on a method of weaving such as is described in United StatesPatent No. 1,795,770, granted March. 10, 1931, to

.5 August G. Fromuth, wherein pile-forming warp threads for a givenlength of the fabric aresupplied fromone beam and whereinthe pile warpthreads for the next succeeding part of the fabric are supplied from asecond beam, the warp threads of the second beam being held out ofoperation and their ends clamped and anchored during such time as theweaving is being carried on with respect to the first beam and the pilewarp threads of the first beam. being held out of operation with theirends clamped and anchored during such time as the weaving operation iscarried on with respect to the second beam.

Important objects of the present invention are to enable the loomoperator to observe the weaving operation at'the fell of the cloth withunobstructed vision; to facilitate the change from active to inactivewarp threads, and to maintain the inactive warp threads taut under alloperating conditions of the loom. To these ends the inventioncontemplates a simple and otherwise satisfactory clamp-supporting andwarp-threadtensioning means for supporting the ends of the inactivewarpthreads on the lay of the loom and for maintaining the inactive warpthreads taut,

' 3 which means includes suitable brackets adapted active warp threadstaut, and are yet weak enough to so yield as to permit the bearing arms,together with the tension roller, to move downwardly under the tensionof the inactive warp threads as the lay moves forward.

Other objects and advantages of the invention will become apparent fromthe following description taken in connection with the accompanyingdrawings, in which- Fig. 1 is a view, in end elevation, of a loomembodying this invention;

Fig. 2 is a sectional view taken on line 2 2 of Fig. 4 and showing inpart the clamp-supporting and thread-tensioning means associated withthelay of the loom;

Fig. 3 is an enlarged fragmental view showing in perspective alatch-device for temporarily holding thetension roller together with itsassociated bearing arms in a depressed position to facilitate removal ofthefthread clamp from its supports; I

Fig.4 is an enlarged plan view of the clampsupporting andthread-tensioning means;

Fig. 5 is an end view of the clamp-supporting and thread-tensioningmeans as viewed from the left in Figsl and 2. In Figs. 4 and'5 onlyinactive warp threads are shown.

The loom, in association. with which the clampsupporting and.warp-thread-tensioning means embodying this invention are-hereinillustrated, comprises a frame 5, including an arch beam 6 and a breastbeam 7. The loom further comprises a lay 8, which isconstructed andoperated, as usual, in front of. a plurality of heddle units 9, 10, 11,12 and 13, the first two of which are adapted to control, respectively,sets of pile- 7. forming warp threads 14 and 15, supplied from beams 16and 17, and the next two of which are adapted to control binder threads18 and 19 supplied from a beam 20, and the last of which is adapted tocontrol wadding or stuffing threads 21 supplied from a beam 22. 'Theheddle units 9 to 13, inclusive, and the heddle-actuating mechanism 24are such as the shown in my patent application Serial No. 489,871, filedOctober 20, 1930, allowed September 13, 1931, the heddle-actuatingmechanism being so connected to the heddles 11, 12 and 13 that they areat all times under the influence of such actuating mechanism and areoperated thereby in a properly timed relation, and the heddles 9 and 10being adapted for selective operation, depending upon whether theweaving operation is to be carried out with respect to the pile-formingwarp threads 14 or 15. During such time as the weaving operation isbeing carried out with respect to the pileforming warp threads 14, theheddle unit 9 controlling such threads is raised and lowered by theheddle-actuating mechanism 24 and the heddle unit 10, which isadapted'toco'ntrol the warp threads 15, is held up out of operation, asby a 0 suitable link or hanger 25 carried bythe arch beam 6 and adaptedfor detachable connection with the upper portion of the frame of thatheddle unit.

While the heddle unit 10, together with the set 105 of warp threads 15controlled thereby, is out of operation, such threads are held in afixed longitudinal relation to each other and are anchored to the lay 8of the loom by a plurality of suitable clamps 26, of the type shown,described and 1 claimed in my copending application Serial No. 489,872,filed August 20, 1930.

The above-mentioned clamps, according to the present invention, areremovably supported on the lay of the loom by clamp-supporting means,which includes a pair of end brackets 27 and an intermediate bracket 28,the brackets 27 being attached to the reed head 30 adjacent oppositeends of the lay, and the bracket 28 being attached to such headintermediate the ends thereof. Each of these brackets is formed at itsforward end' with a U-shaped hanger 31, at the entrance to which isprovided an overhanging lip 32, preferably formed integral with-itsassociated bracket, the front end of which lip is spaced from theforward leg of the hanger a sufficient distance to permit the clamp tobe introduced into the hanger and removed therefrom. The function of theover-hanging lips 32, as will be readily appreciated from Fig. 2, is toso engage the threadcl'amps 26, when they are supported by the hangers31, as to prevent their being accidentally displaced under the tensionof the inactive warp threads, especially during the forward movement ofthe lay 8. As will appear from Figs.4 and 5, the hanger 31,of theintermediate bracket 28, is substantially identical with the hangers ofthe end brackets 27, except for the fact that it is somewhat wider so asto readily accommodate the adjacent ends of the two thread-clamps 26.

Depending from the intermediate bracket 28 and each of the end brackets27, is a roller-supporting'arm' 34, in which is journalled a guide shownas a guide-roller 35, which extends from one end of the lay 8 to theother end thereof and under which pass the inactive warp threads, eitherthose indicated by the numeral 14 or those indicated by the numeral 15,depending, of course, upon which of these sets of warp threads isemployed in the weaving operation; or, conversely, depending upon whichof these sets of warp threads is out of operation and is held by theclamps 26 on the lay of the loom. v

From the description thus far, it will be appreciated that as the lay ofthe loom recedes, the inactive warp threads that are supported therebytend to become slack. In order, therefore, to take up such slack, thereis provided warp-threadtensioning means, which comprises atension-supplying idle-warp-thread support shown as a pair of tensionrollers 36, removably journalled in bearing arms 37, 37, and 38, 38, theformer of which are secured to a shaft 40, and the latter of which aresecured to a shaft 41. The shaft 40 is journalled in suitable bearings42 and 44, carried, respectively, by the intermediate bracket 28 and oneof the end brackets 27, and the'shaft 41 is journalled in similarbearings 45 and 46 carried, respectively, by the intermediate bracket 28and the other end bracket 27. The bearing arms 37, 37, and 38, 38, areurged upwardly about the axis of therespective shafts 40 and 41 bysuitable springs 47, secured to the intermediate bracket 28 and adaptedto engage the adjacent'bearing arms 37 and 38 at points forward of andoffcenter with respect to a vertical plane passing through the axis ofthe shafts 40 and 41 to which the bearing arms 37, 37, and 38, 38 are,respectively, secured. Because of the fact that the bearing arms 37, 37,and 38, 38, are rigidly connected to the shafts 40 and 41, respectively,it follows that but a single spring need be employed in association withthese respective pairs of bearmg arms to normally urge them upwardlytogether with; the respectively associated tension rollers 36 over whichthe idle warp threads pass.

From the foregoing, particular reference being had to Fig. 2, it will bereadily appreciated that as the lay of the loom moves forwardly, thebearing arms 37, 37, and 38, 38, together with their associated tensionrollers 36, move downwardly, under the tension of the inactive warpthreads, from the dotted line positions shown in that figure to the fullline positions shown therein, and that as the lay of the loom recedesthe spring 47'will move the bearing arms and the tension rollers fromtheir full line positions to their dotted line positions, with theresult that the inactive warp threads are maintained taut under allconditions of operation of the lay of the loom.

When it is desired to remove the clamps 26 from the hangers 31, the layof the loom is brought to rest in its receded position, whereupon therespective pairs of bearing arms 37, 37, and 38, 38, are moved downmanually to a position somewhat below the full line position of sucharms, indicated in Fig. 2, whereupon a suitable latch-device 48(therebeing one such latch-device for each pair of bearing arms) isautomatically brought into operation to hold the bearing arms, 1together withthe associated tension rollers, in their respectivedepressed positions. Each of these latch-devices includes a trigger ordog 50, pivotally connected to a pair of upstanding lugs P or ears 51,preferably formed integral with the 1 intermediate bracket 28, thetrigger 50 being provided at its lower end with an extension or arm 52,beneath which is suitably held a compression spring 54, which normallyurges the trigger for- I wardly, the forward. movement of such trigger 1being limited by a stop-pin carried thereby and adapted to engage ashoulder or lug 56 formed integral with one of the upstanding lugs orears 51. The trigger 50 is formed with an 7 inclined or cam surface 57,with which a latch- 1 pin 58, there being one such pin for each of theadjacent bearing arms 37 and 38, is adapted to engage when the bearingarms 37, 37, and 38, 38, are manually moved downwardly beyond the Ylowermost position that they assume, as indi- 1 cated in full lines inFig. 2, during the operation of the loom. Upon engagement of the pins 58with the inclined or cam surfaces 57 of the trigger 50, such triggersare moved rearwardly, I against the action of the springs 54, until such1 time as these latch pins move beyond the inclined or cam surfaces ofthe triggers, whereupon the springs 54 snap the triggers into latchingposition with respect to the latch pins, thus tem- I porarily lockingthe bearing arms, together with 1 their associated tension rollers, indepressed po- 'sitions. By the depression of the tension rollers as justdescribed, the idle warp threads are slackened, thus permitting theclamps 26 to be readily removed from the hangers 31. After re- 1 movingthe clamps, the tension rollers 36 may be easily lifted from theirbearings in the bearing arms 37, 37, and 38, 38, to permit the clamps tobe so placed on the surface of the cloth adjacent the fell thereof as toenable the clamped 1 warp threads to be introduced into the fabric afterplacing the heddle unit controlling such threads in operation and afterrendering inoperative the heddle unit controlling the warp threads withrespect to which the immediately preceding duced into the bearings ofthe bearing arms 37,

3'7, and 38, 38, after which the clamps are placed in the hangers 31, asshown in Fig. 2, the bearing arms being then released from theirdepressed positions, by moving the latches rearwardly through the aid oftheir associated levers or handles 60, so that the tension rollers maybe moved upwardly under the action of the springs 47 which engage thebearing arms, thus conditioning the warp-thread-tensioning means for usein the Weaving operation that is to be carried out with respect to thenow active warp threads.

Although only one form of the invention is herein shown and described,it will be understood that various changes may be made without departingfrom the spirit of the invention or the scope of the following claims.

What is claimed is:

1. In a loom, clamping means for attaching the free ends of idle warpthreads to the lay of the loom, and tension means for maintaining theidle warp threads taut during the forward and backward movements of thelay, said tension means comprising a tension-supplying idle-warp-threadsupport interposed between the clamping means and the idle-warp-threadbeam and carried by the lay and moving therewith and exposed for accessfrom the front of the lay.

2.'In a loom, means for attaching the free ends of idle warp threads tothe lay of the loom comprising a clamp, brackets carried by said lay andadapted to receive and removably support said clamp, and tension meansfor maintaining the idle warp threads taut during the forward andbackward movements of the lay comprising a tension-supplyingidle-warp-thread support interposed between the clamping means and theidle-warp-thread beam and carried by the lay and moving therewith andexposed for access from the front of the lay.

3. In a loom, means for attaching the free ends of idle warp threads tothe lay of the loom comprising a clamp, brackets carried by said lay andadapted to receive and removably support said clamp, tension means formaintaining the idle warp threads taut during the forward and backwardmovements of the lay comprising a pair of bearing arms pivoted to saidlay, a tension-supplying idle-warp-thread support carried by saidbearing arms and adapted to engage said idle warp threads intermediatesaid clamp and said idle-warp-thread beam, and

I spring means co-acting with said bearing arms for moving said arms,together with their associated idle-warp-thread support, as the layretreats, and for permitting said arms, together with said supports, tomove in an opposite direction as the lay of the loom moves forwardwhereby said idle warp threads are maintained taut under all conditionsof operation of the lay of the loom.

4. In a loom, means for attaching the free ends of idle warp threads tothe lay of the loom comprising a clamp, brackets carried by said lay andadapted to receive and removably support said clamp, tension meansfor'maintaining the idle warp threads taut during the forward andbackward movements of the lay comprising a pair of bearing arms pivotedto said lay, a tension-1'. supplying idle-warp-thread' support carriedby said bearing arms and adapted to engage said idle warp threadsintermediate said clamp and'said idle-warp-thred beam, spring meansco-acting with said bearing arms for moving said arms, to-

idle-warp-thread beam, spring means co-acting gether with theirassociated idle-warp-thread support, as the lay retreats, and forpermitting said arms, together with said supports, to move in anopposite direction as the lay of the loom moves forward whereby saididle warp threads are maintained taut under all conditions of operationof the lay of the loom, and a latch-device for retaining said bearingarms, together with their associated tension-supplying idle-warp-threadsupports, in depressed positions.

5. In a loom, clamping means for attaching the free ends of idle warpthreads to the lay of the loom, tension means for maintaining the idlewarp threads taut during the forward and backward movements of the lay,said tension means comprising a tension-supplying idle-warp-threadsupport carried by the lay and interposed between said clamping meansand the idle-warp-thread beam, and a guide beneath which the idle warpthreads are adapted to pass, said guide being carried by the lay anddisposed intermediate said tension-supplying idle-warp-thread supportand said idle-warp-thread beam.

' 6. In a loom, means for attaching the free ends of idle warp threadsto the lay of the loom comprising a clamp, brackets carried by said layand adapted to receive and removably support said clamp, tension meansfor maintaining the idle warp threads taut during the forward andbackward movements of the lay comprising a tensionsupplyingidle-warp-thread support carried by said lay and exposed at the frontthereof and interposed between said clamping means and theidle-warp-thread beam, and a guide beneath which the idle warp threadsare adapted to pass, said guide being carried by the lay and disposedintermediate said tension-supplying idle-warpthread support and saididle-warp-thread beam.

7. In a loom, means for attaching the free ends of idle warp threads tothe lay of the loom comprising a clamp, brackets carried by said lay andprovided with hangers located at the front of the lay and adapted toreceive and removably support said clamp, a pair of bearing armspivotally connected to said bracket, spring means urging said bearingarms upwardly about their points of pivotal connection with saidbracket; and tension-supplying idle-warp-thread support removablyjournalled in the free ends of said bearing arms, over which said idlewarp threads pass at a point intermediate said clamp and theidlewarp-thread beam, and a guide carried by said brackets and disposedintermediate said tensionsupplying idle-warp-thread support and saididle-warp-thread beam, under which guide said idle warp threads pass.

8. In a loom, means for attaching the free ends of idle warp threads tothe lay of the loom comprising a clamp, brackets carried by said lay andprovided with hangers located at the front of the lay and adapted toreceive and removably support said clamp, a pair of bearing armspivotally connected to said bracket, spring means urging said bearingarms upwardly about their points of pivotal connection with saidbracket, tensionesupplying idle-warp-thread support removably'journalled in the free ends of said bearing arms,

intermediate said tension-supplying thread beam, under which guide saididle warp threads pass, and means for automatically locking said bearingarms, together with their associated tension-supplying idle-warp-threadsupport, in

depressed positions to facilitate introduction of said-clamp into saidhangers and to facilitate its removal therefrom.

' JEREMIAH KEYS.

